Conditions which cause proliferation of hemopoietically active tissue or of tissue which has embryonic hemopoietic potential. They all involve dysregulation of multipotent MYELOID PROGENITOR CELLS, most often caused by a mutation in the JAK2 PROTEIN TYROSINE KINASE.

Synonyms: Disorders, Myeloproliferative, Myeloproliferative Disorders, Disorder, Myeloproliferative, Myeloproliferative Disorder